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Lesson 4 Morrison / WellsCLB: A Comp Guide to IC3 4E Maintaining Hardware Keyboard and Mouse: Use a can of compressed air to remove the dust from the keyboard. 555

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Lesson 4 Morrison / WellsCLB: A Comp Guide to IC3 4E Maintaining Hardware (continued) Inkjet Printers: Small deposits of dry ink accumulate on the print head of an inkjet printer. You can use special supplies to clean an inkjet printer. 666

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Lesson 4 Morrison / WellsCLB: A Comp Guide to IC3 4E Upgrading and Replacing Hardware Components Computer Memory: RAM is made up of small memory chips that form a memory module, installed in the RAM slots on the motherboard of your computer. 888

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Lesson 4 Morrison / WellsCLB: A Comp Guide to IC3 4E Upgrading and Replacing Hardware Components (continued) Mouse: You can replace a mouse without replacing any other computer hardware. A touchpad is a pointing device you can use instead of a mouse. 10

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Lesson 4 Morrison / WellsCLB: A Comp Guide to IC3 4E Performing Preventive Maintenance Disk Defragmentation: Disk fragmentation occurs when data is broken up into many pieces that are not stored close together. 11

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Lesson 4 Morrison / WellsCLB: A Comp Guide to IC3 4E Performing Preventive Maintenance (continued) Recycle Bin: The Windows Recycle Bin is a holding area for files and folders before their final deletion from a storage device. 12

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Lesson 4 Morrison / WellsCLB: A Comp Guide to IC3 4E 13 Performing Preventive Maintenance (continued) Temporary Files: Temporary files normally exist only during the current session of the program. Cookies: A cookie is a small text file that a Web site uses to identify a specific computer.

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Lesson 4 Morrison / WellsCLB: A Comp Guide to IC3 4E 15 Summary In this lesson, you learned: A computer requires maintenance on a regular schedule to prevent problems such as the degrading of hard disk performance and monitor trouble. Damaged and poorly maintained cables can prevent peripheral devices from communicating with the computer. Unorganized and unprotected cables can also create safety hazards. Cable management should therefore be part of a regular computer maintenance routine. 15

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Lesson 4 Morrison / WellsCLB: A Comp Guide to IC3 4E 16 Summary (continued) To maintain the computer keyboard, use a can of compressed air to remove the dust from the keyboard every six months. Clean a mechanical mouse by removing its cover, removing debris from the roller and the ball, and then reassembling the mouse. 16

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Lesson 4 Morrison / WellsCLB: A Comp Guide to IC3 4E 17 Summary (continued) Printer maintenance helps to prevent common printing problems. Many inkjet printers have a self- cleaning mode. If yours does not, use an inkjet cleaning cartridge to flush dirt and debris out of clogged printer nozzles. Clean a laser printer when you change the toner cartridge. Adding computer memory (RAM) often provides the best value for increasing overall system performance. 17

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Lesson 4 Morrison / WellsCLB: A Comp Guide to IC3 4E 18 Summary (continued) All computers slow down as you work with them. To improve or maintain computer efficiency, periodically use Windows tools to defragment hard drives, empty the Recycle Bin, delete temporary files, and remove cookies. Some maintenance procedures are not suitable for the average computer user and should be performed by a computer professional, such as replacing the power supply or opening the power supply case, replacing other electrical components, including the processor and RAM, and adding an internal hard disk. 18